The Facebook updates were published by Sam Nunberg, a communications consultant on Trump’s campaign. Nunberg’s comments on Facebook were first reported by Business Insider on Friday. They include multiple posts where Nunberg described President Barack Obama as “Kenyan” and “Muslim” and a 2007 update where Nunberg wrote about calling Sharpton’s daughter “N—!”

In a phone conversation with Business Insider, Sharpton said Nunberg comments raise questions about the “environment” of Trump’s campaign.

“You would have to wonder why this guy would be comfortable enough to post this on his Facebook and then have that job and not be concerned … that someone that does not have views that are racial would even be open to him being around them,” Sharpton said. “This appears to me to be very much his persona. This is not a secret.”

Trump, who is currently the frontrunner in the Republican primary, has previously made controversial comments about the black community. However, Trump has maintained that he has a “great relationship with African Americans.”

“He and I have debated back and forth on race. I fought him years ago on Central Park and we talked cordially, then we fell out on birther,” Sharpton said of his relationship with Trump. “I met with him and told him. He said, ‘You can’t call me a racist.’ I said, ‘I think what you said was racist.’ So, we’ve gone back-and-forth, but this shows an environment that is intolerable.”